Gurobi 5.0.1 (linux64) logging started Fri Nov 16 18:13:33 2012 Optimize a model with 9401 rows, 14280 columns and 42007 nonzeros Presolve removed 33 rows and 3927 columns Presolve time: 0.15s Presolved: 9368 rows, 10353 columns, 38080 nonzeros Variable types: 0 continuous, 10353 integer (10353 binary) Found heuristic solution: objective 38.0000000 Root relaxation: objective 2.000000e+00, 9803 iterations, 0.63 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 2.00000 0 110 38.00000 2.00000 94.7% - 2s H 0 0 4.0000000 2.00000 50.0% - 2s H 0 0 3.0000000 2.00000 33.3% - 2s 0 0 2.00000 0 291 3.00000 2.00000 33.3% - 4s 0 0 2.00000 0 207 3.00000 2.00000 33.3% - 9s 0 0 2.00000 0 203 3.00000 2.00000 33.3% - 13s 0 0 2.00000 0 193 3.00000 2.00000 33.3% - 20s 0 0 2.00000 0 230 3.00000 2.00000 33.3% - 25s 0 0 2.00000 0 110 3.00000 2.00000 33.3% - 27s 0 0 2.00000 0 203 3.00000 2.00000 33.3% - 29s 0 0 2.00000 0 110 3.00000 2.00000 33.3% - 32s 0 0 2.00000 0 203 3.00000 2.00000 33.3% - 36s 0 0 2.00000 0 230 3.00000 2.00000 33.3% - 43s 0 0 2.00000 0 230 3.00000 2.00000 33.3% - 45s 0 2 2.00000 0 230 3.00000 2.00000 33.3% - 52s 4 4 2.00000 1 110 3.00000 2.00000 33.3% 3909 57s 5 5 2.00000 1 230 3.00000 2.00000 33.3% 3127 66s 6 6 2.00000 1 110 3.00000 2.00000 33.3% 2606 72s 7 6 2.00000 1 110 3.00000 2.00000 33.3% 2234 78s 8 7 2.00000 1 110 3.00000 2.00000 33.3% 1954 86s 9 8 2.00000 1 116 3.00000 2.00000 33.3% 1737 94s 10 8 2.00000 1 110 3.00000 2.00000 33.3% 1564 96s Cutting planes: Zero half: 1 Explored 14 nodes (410361 simplex iterations) in 98.18 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 3.000000000000e+00, best bound 3.000000000000e+00, gap 0.0%